<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script src="./js/vue.js"></script>
</head>
<body>
    <div id="app">
        {{msg2}}=={{msg3}}
    </div>


    <script>
        var  vm=new  Vue({
            el:'#app',
            data:{
                msg2:'hello',
                msg3:'<div>=====world</div>'
            }
        })
    </script>
</body>
</html>